DTU3005-B Intelligent Data Transfer Device for Connection to PLCs and Modbus Networks Operator’s Manual
DANGER Hazardous voltages and high-speed moving parts in electrical devices communicating with WinPM. Can cause death, serious injury or property damage. See safety instruction contained herein. Restrict use to qualified personnel. The use of unauthorized parts in the repair of the equipment or tampering by unqualified personnel will result in dangerous conditions that can cause death, serious injury or property damage.
Table of Contents 1 Introduction ....................................... 1 1.1 1.2 1.3 1.4 Product Overview ................................. 1 Software Overview ............................... 1 Features................................................. 1 Applications .......................................... 1 1.4.1 PLC to SEAbus ......................... 2 1.4.2 Modbus Master to SEAbus..... 3 1.4.3 SEAbus Port Expander ............ 5 2 Installing the Software .....................
Table of Contents E.2 E.3 E.4 E.5 E.6 E.7 E.8 E.9 E.10 E.11 E.12 E.13 E.14 E.15 E.16 E.17 E.18 E.19 E.20 E.21 Device Type: 4300 Power Meter ..........79 Device Type: 4700 Power Meter...........80 Device Type: 4720 Power Meter...........82 Device Type: Static Trip III ....................84 Device Type: SensiTrip III ......................86 Device Type: SB-TL ..............................87 Device Type: Pulse Reading Meter (PRM) 88 Device Type: ISGS ................................
1 Introduction 1 Introduction 1.1 Product Overview The Panel-Tec DTU3005 is an intelligent, multiplefunction data transfer unit that enables communications between Siemens communicating power meters, trip units, and protective relays, and PLCs or Modbus networks. The device is designed for the harsh industrial environment and is suited for use in switchgear. The device is shown below in Figure 1.1. The device is powered from an external power supply.
1 Introduction 1.4.1 PLC to SEAbus The basic configuration is a PLC attached to port 1 of the DTU3005, and the Siemens ACCESS devices attached to port 2. This is shown below in Figure 1.2. Port 3 can be configured as a passthrough to the SEAbus devices. This allows a personal computer running Siemens WinPM™ or other supervisory software to connect directly to the SEAbus devices at the same time as the PLC. This is shown in Figure 1.3. An additional DTU3005 device can be attached to port 3.
1 Introduction 1.4.2 Modbus Master to SEAbus The DTU3005 unit can be configured as a Modbus (RTU) slave. In this configuration, a Modbus master device (usually a SCADA system) is connected to port 1. The Modbus master uses the DTU3005 to monitor and/or control Siemens ACCESS devices. A typical Modbus application is shown below in Figure 1.5. The passthrough port (port 3) can be used to connect to a supervisory computer running WinPM software.
1 Introduction Multi-Drop Modbus Master to SEAbus By using a Siemens Isolated Multi-Drop Converter, you can connect your Modbus Master device to four DTU3005 devices. Each DTU3005 can connect to up to 32 Siemens ACCESS devices, as well as be daisy chained to up to 32 additional DTU3005 devices. An example configuration is shown below in Figure 1.8. Figure 1.8 Multi-Drop Configuration Figure 1.7 Connection to Modbus Master using a Multidrop Cable 4 Siemens Energy & Automation, Inc.
1 Introduction 1.4.3 SEAbus Port Expander The DTU3005 can be used as a SEAbus port expander for ACCESS devices, allowing two personal computers running WinPM (or other supervisory software) to communicate with up to 32 ACCESS devices. This configuration is shown below in Figure 1.9. Figure 1.9 SEAbus Port Expander Siemens Energy & Automation, Inc.
2 Installing the Software 2 Installing the Software The DTU3005 Editor software can be installed from the DOS prompt onto a PC running Microsoft® Windows version 3.1, 95, or 98. The PC processor must be less than 300 MHz (or have a utility program installed to slow down the processor speed) for the Editor software to work properly. Note: The DTU3005 Editor software does not work in a Windows NT environment. insert the installation diskette into your computer and follow the steps listed below.
2 Installing the Software returns you to the DOS prompt as shown in the example screen below. 7. 7 If you are running Windows, type exit to close the DOS window. Siemens Energy & Automation, Inc.
3 Starting the Software 3 Starting the Software To start the DTU3005 Editor software, follow these steps: 1. 2. 3.1 If you are running Windows 3.1, double click the MS-DOS Prompt icon in the Main window of Program Manager. For Windows 95/98, select MSDOS Prompt from the Start menu. At the DOS prompt, which is usually C:\> (or C:\WINDOWS> if you are running a DOS prompt from Windows) type CD \DTU3005B, where 3.
3 Starting the Software 3.2 Main Menu The main menu is located on the top line of the screen. In addition to the menu selections, the name of the current project and the time of day is displayed on the top line. There are five main menu selections. They are • ≡, or the Program Information menu. Selecting it displays the program information screen. • The Project menu enables you to create, load, save, view and print project files. It also allows you to switch to a DOS prompt or quit the program.
3 Starting the Software 3. Type in a name for the project up to eight letters and numbers in the Project Name: field and press Enter. The Project Type: field will then be highlighted. Press the spacebar to display the project types, which are: • 10 PLCs to Devices—allows a PLC to control and/or monitor up to 32 supported Siemens devices. See Chapter 4 for configuring this project type.
3 Starting the Software 4. 5. To select a project type, highlight the type and either press Enter or click the left mouse button. Then highlight the Ok button on the dialog box and either press Enter or click the left mouse button. When the screen refreshes, the Project menu is displayed with additional menu options now available. These options apply to the open project file that is active (i.e., the project name appears in the top line of the screen). • • 6. Close—allows you to close a project file.
4 Creating Project Files—PLC to Devices 4 Creating Project Files—PLC to Devices This chapter covers configuration of the DTU3005 for PLC communications with Siemens devices. Once you have created a PLC to Devices project (see Chapter 3), follow the directions in this chapter to configure the project file. Then see Chapter 7 for directions on downloading the project to the DTU3005. See also Appendix D for wiring diagrams for your particular PLC, as required. 4.
4 Creating Project Files—PLC to Devices • Device Command Registers—allows you to indicate which PLC registers will be used for device commands. • Device Defaults—allows you to set the default data registers for more than one device of a certain type, e.g., set the defaults for all 4720 power meters or all S7-I/O units. The data registers can still be customized for each device, as required. See Section 4.7.2 for more information.
4 Creating Project Files—PLC to Devices To select the PLC connected to port 1, highlight PLC Protocol and press Enter. The PLC Protocols selection menu appears: PLC Protocol Use the Down Arrow and Up Arrow keys to scroll through the list of available PLC Protocols, since not all choices are visible at one time. To select a protocol, highlight the selection and press Enter. PLC Number After you have selected your PLC, the PLC Number selection box is highlighted.
4 Creating Project Files—PLC to Devices program displays an entry box for the RTS delay time. Enter the time in milliseconds. passes with no response being received, the DTU will assume that no response is coming and will retry the request. Enter the time in milliseconds. Saving Port 1 Configuration Information Once you have entered all the configuration information, select Save to save the configuration to the project file. Then select Ok or press the Esc key to close the configuration screen.
4 Creating Project Files—PLC to Devices Saving Port 2 Configuration Information Once you have entered all the configuration information, select Save to save the configuration to the project file. Then select Ok or press the Esc key to close the configuration screen. If you have changed the configuration and have not saved it to the project file, you will be prompted to either save or discard the changes. Select Revert to return to the last previously saved configuration without saving any changes. 4.
4 Creating Project Files—PLC to Devices 4.6 Device List Setup The Device List menu item enables you to indicate which registers on the PLC will receive data from the devices. In this screen, you will enter the device type and address for each Siemens device connected to port 2. You will also indi- cate to which registers on the PLC you want the DTU3005 to write device data.
4 Creating Project Files—PLC to Devices 3. 4. 18 Select the device from the list by pressing Enter or the spacebar. The highlight moves to the Address field, and the PLC register fields now display as shown in the example screen below. With the Address field highlighted, enter the device’s address. This number should be between 1 and 254, and match the number programmed into the device itself. Press the Tab key twice to go to the Real-Time Data Registers field. 5.
4 Creating Project Files—PLC to Devices 6. 7. 8. 9. Enter the beginning register number in the Real-Time Data Registers field. Refer to Appendix A for valid register numbers for your PLC application. The DTU3005 Editor software supplies the last register number after you enter the first. In the example above, the 4700 Power Meter uses 41 registers for its data. When you enter 1 for the first register, the last register becomes 42.
4 Creating Project Files—PLC to Devices 4. 20 Select a data register on the list and press Enter to see a list of available real time data. These data items are identical to the standard data items listed in Appendix E. Not all data items are visible on the screen at one time. Use the mouse and the scroll bar, or the Page Up and Page Down keys to view all of the data items. Siemens Energy & Automation, Inc.
4 Creating Project Files—PLC to Devices 5. Select the data word (16 bit data) from the list and press Enter. Continue to set the other data words in the same manner. Many data items consist of two words (32 bit data). It is important that you configure both words in order to transmit useful information to the DTU3005’s registers. To conserve registers when using VDEW devices, you should set all unused registers to “Not Used” and place them at the end of the list.
4 Creating Project Files—PLC to Devices 3. Select a data item and press Enter to see a list of device real time data that can be assigned to that data word. Select Not Used if you do not want that data word to be used. Not all of the entries are visible on the menu. Use the scroll bar or the Page Up and Page Down keys to view all the entries. Select Clear All to set all data words to “Not Used.
4 Creating Project Files—PLC to Devices To conserve registers when using VDEW devices, you should set all unused registers to “Not Used” and place them at the end of the list. The DTU3005 will then only allocate registers for those containing device data. (This does not apply to SEAbus devices, for which the DTU3005 allocates 16 registers regardless if they are used or not.) 4.8 Device Text Setup (7SJ600 Only) The Device Text to Values Table menu item is only available for configuring the 7SJ600 relay.
4 Creating Project Files—PLC to Devices The relevant status codes (Text #) are listed below. Table 4.
4 Creating Project Files—PLC to Devices Table 4.1 7SJ600 Relay Information (Continued) 1372 L2,3,4 On : L1 Off 1373 L1 On : L2,3,4 Off 1374 L1,4 On : L2,3 Off 1375 L1,3 On : L2,4 Off 1376 L1,3,4 On : L2 Off 1377 L1,2 On : L3,4 Off 1378 L1,2,4 On : L3 Off 1379 L1,2,3 On : L4 Off 1380 L1,2,3,4 On Once you are finished entering data, select Save to save your configuration, then select Ok to exit the dialog box. Select Revert to bring back the previous settings. 4.
4 Creating Project Files—PLC to Devices parameter is used only with Allen-Bradley PLCs. It specifies the file number in the PLC that contains the register values that are transferred to or from the device. 4. Select Save to save the information to the project file, and then select Ok or press Esc to exit the device diagnostic registers screen. If at any time you want to return to the last saved version of the device diagnostics registers, select Revert without saving any changes. 4.
4 Creating Project Files—PLC to Devices 4. Enter the value for the Command Block Read Delay. This is the delay between times that the DTU3005 reads the data from the PLC’s command registers. This controls the frequency that the registers are read to allow for critical PLC scan times. 5. Select Save to save the device information to the project file, and then select Ok or press Esc to exit the device command registers screen.
5 Creating Project Files—Modbus Master to Devices 5 Creating Project Files—Modbus Master to Devices This chapter covers configuration of the DTU3005 for Modbus master device communications with Siemens devices. Once you have created a Modbus Master to Devices project (see Chapter 3), follow the directions in this chapter to configure the project file. Then see Chapter 7 for directions on downloading the project to the DTU3005. 5.
5 Creating Project Files—Modbus Master to Devices 5.2 Configuring the Project File Once you have created or opened the project file, select Edit from the main menu. When the Device Protocol for port 2 is set to SEAbus (see Section 5.4), the following menu items appear: • Port 1 (Modbus Master)—allows you to select the protocol (RTU or ASCII) and configure the communications settings for the Modbus Master device connected to port 1.
5 Creating Project Files—Modbus Master to Devices 5.3 Modbus Setup—Port 1 You must have a Modbus Master to Devices project file open to configure port 1 using the instructions in this section. Select Port 1 (Modbus Master) from the To select the protocol for the Modbus Master device connected to port 1, highlight Modbus Protocol and 30 Edit menu, and the Port 1 Modbus Master configuration screen appears. press Enter. The Modbus Master Protocol selection menu appears: Siemens Energy & Automation, Inc.
5 Creating Project Files—Modbus Master to Devices Select either ASCII or RTU as your Modbus protocol, then press the Tab key to highlight the Modbus ID selection box. The Modbus ID is used to identify the address of the DTU. Type in the Modbus ID number and press Enter. 2-Wire RS422 or RS485 Communications After you have entered the Modbus ID number, highlight the 2-Wire RS422 or RS485 Communications selection box.
5 Creating Project Files—Modbus Master to Devices 5.4 Device Setup—Port 2 One or more Siemens devices may be connected to port 2. You must have a Modbus Master to Devices project file open to configure port 2 using the instructions in this section. Select Port 2 (Devices) from the Edit menu, and the Port 2 configuration screen appears. Device Protocol Saving Port 2 Configuration Information The Device Protocol indicates which Siemens devices can be connected to port 2.
5 Creating Project Files—Modbus Master to Devices 5.5 Modbus/Passthrough Setup—Port 3 any messages received on port 3 of the DTU are simply “passed through” to the devices. Port 3 can be used for passthrough communications to your Siemens SEAbus devices or for connection to a second Modbus Master device. Passthrough communications enables a PC running WinPM, or other supervisory software connected to port 3 of the DTU3005 to communicate directly with the SEAbus devices connected to port 2.
5 Creating Project Files—Modbus Master to Devices Passthrough to Port 2 (SEAbus) If you select Passthrough to Port 2 (SEAbus), the screen appears as shown below. 2-Wire RS422 or RS485 Communications After you have selected Passthrough to Port 2 (SEAbus), press Tab or select 2-Wire RS422 or RS485 Communications. This box will only need to be checked if the communications with your SEAbus devices use a 2-wire RS485 or RS422 interface. This is the usual method of connecting SEAbus devices.
5 Creating Project Files—Modbus Master to Devices 5.6 Device List Setup The device list menu which registers on the devices. In this menu, and address for each item enables you to indicate PLC will receive data from the you will enter the device type Siemens device connected to This screen is divided into two parts: • On the left side of the screen is a list of the devices connected to port 2 (the list is initially empty).
5 Creating Project Files—Modbus Master to Devices 3. Select the device from the list by pressing Enter or the spacebar. The highlight moves to the Address field, and the PLC register fields now display as shown in the example screen below. 5. Enter the beginning register number in the RealTime Data Registers field. Refer to Appendix A for valid register numbers for your PLC application. The DTU3005 Editor software supplies the last 36 4. With the Address field highlighted, enter the device’s address.
5 Creating Project Files—Modbus Master to Devices change the starting register to 10, the last register will automatically change to 51. Note: The Modbus Master must read these register numbers to be able to access the realtime data for this device. 6. 7. Press Shift+Tab, or click the left mouse button to highlight the File field and enter the file number.
5 Creating Project Files—Modbus Master to Devices 4. 38 Select a data register on the list and press Enter to see a list of available real time data. The data items are identical to the standard data items listed in Appendix E. Not all data items are visible on the screen at one time. Use the mouse and the scroll bar, or the Page Up and Page Down keys to view all of the data items. Siemens Energy & Automation, Inc.
5 Creating Project Files—Modbus Master to Devices 5. Select the data word (16 bit data) from the list and press Enter. Continue to set the other data words in the same manner. Many data items consist of two words (32 bit data). It is important that you configure both words in order to transmit useful information to the DTU3005’s registers. 6.
5 Creating Project Files—Modbus Master to Devices 3. Select a data item and press Enter to see a list of device data items that can be assigned to that data word. Select Not Used if you do not want that data word to be used. Not all of the entries are visible on the menu. Use the scroll bar or the Page Up and Page Down keys to view all the entries. Select Clear All to set all data words to “Not Used.
5 Creating Project Files—Modbus Master to Devices To conserve registers when using VDEW devices, you should set all unused registers to “Not Used” and place them at the end of the list. The DTU3005 will only allocate registers for those containing device data. (This does not apply to SEAbus devices, for which the DTU3005 allocates 16 registers regardless if they are used or not.) 5.
5 Creating Project Files—Modbus Master to Devices The relevant status codes (Text #) are listed below. Table 5.
5 Creating Project Files—Modbus Master to Devices Table 5.1 7SJ600 Relay Information (Continued) 1372 L2,3,4 On : L1 Off 1373 L1 On : L2,3,4 Off 1374 L1,4 On : L2,3 Off 1375 L1,3 On : L2,4 Off 1376 L1,3,4 On : L2 Off 1377 L1,2 On : L3,4 Off 1378 L1,2,4 On : L3 Off 1379 L1,2,3 On : L4 Off 1380 L1,2,3,4 On Once you are finished entering data, select Save to save your configuration, then select Ok to exit the dialog box. Select Revert to bring back the previous settings. 5.
5 Creating Project Files—Modbus Master to Devices register 40001, etc. Be sure that the registers you specified are not being used by other devices. 3. Select Save to save the information to the project file, and then select Ok or press Esc to exit the device diagnostic registers screen. If at any time you want to return to the last saved version of the device diagnostics registers, select Revert without saving any changes. 5.
6 Creating Project Files—SEAbus Port Expander 6 Creating Project Files—SEAbus Port Expander This chapter covers configuration of the DTU3005 as a SEAbus port expander. Once you have created a SEAbus port expander project (see Chapter 3), follow the directions in this chapter to configure the project file. Then see Chapter 7 for directions on downloading the project to the DTU3005.
6 Creating Project Files—SEAbus Port Expander 6.1 Passthrough Setup—Port 1 You must have a SEAbus Port Expander project file open to configure port 1 using the instructions in this section. Select Port 1 (Passthrough) from the Edit 2-Wire RS422 or RS485 Communications The 2-Wire RS422 or RS485 Communications selection box will only need to be checked if the communi- 46 menu, and the Port 1 (Passthrough) configuration screen appears.
6 Creating Project Files—SEAbus Port Expander When 2-wire communications are being used, RTS must be looped back to CTS on the DTU side of the cable. This can be done on the RS232 side by looping pins 4 and 5 or on the RS422/485 side by looping 16 to 18 and 17 to 19. See Appendix D for wiring diagrams for your particular PLC, and whether it uses a 2-wire connection. To select the checkbox, click on it with the mouse or, with the 2-Wire RS422 or RS485 Communications selection highlighted, press the spacebar.
6 Creating Project Files—SEAbus Port Expander 6.2 SEAbus Device Setup—Port 2 One or more Siemens devices may be connected to port 2. You must have a SEAbus Port Expander project file open to configure port 2 using the instructions in this section. Select Port 2 (SEAbus Devices) from the Edit menu, and the Port 2 configuration screen appears. Configuration Information 6.3 The configuration selections with the exception of Response Time-Out are the same as those for port 1. Refer to Section 6.
7 Transferring Project Files 7 Transferring Project Files Once you have configured and saved your project file for your particular application, you need to download it to the DTU3005 unit. First verify which COM port on your computer is used to upload and download projects to the DTU3005 unit (see Chapter 8).
7 Transferring Project Files DTU3005B Port 3 2 3 7 DB-25 Male 1 TXD RXD Ground 2 14 3 15 4 16 5 17 6 18 7 19 8 20 9 21 10 22 11 23 12 24 13 25 Port 3 Personal Computer RS-232 Port 1 2 3 4 5 6 7 8 DB-9 Female DCD RXD TXD DTR Ground DSR CTS RTS 5 4 9 3 8 2 7 1 6 Cable Type: 4 Conductor Round . Figure 7.1 Null Modem Cable connection The null modem cable will cross pins 2 and 3 (RXD and TXD). On the computer end of the cable, pins 7 and 8 (RTS and CTS) should be connected together.
